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This section describes the four requirements for optical modules in data centers
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This section describes the four requirements for optical modules in data centers

Views: 0     Author: Site Editor     Publish Time: 2022-10-11      Origin: Site

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At present, data center traffic is increasing exponentially and network bandwidth is also being upgraded, which brings great development opportunities for high-speed optical modules. Here are four requirements for optical modules in next-generation data centers.

1, high speed, improve bandwidth capability

The switching capacity of switching chips almost doubles every two years. Broadcom continued to launch Tomahawk series switching chips from 2015 to 2020, with the switching capacity increasing from 3.2T to 25.6T. The new product is expected to have an exchange capacity of 51.2T by 2022. The port rates of servers and switches are 40 Gbit/s, 100 Gbit/s, 200 Gbit/s, and 400 Gbit/s. At the same time, the transmission rate of the optical module increases steadily and is being upgraded in the direction of 100G, 400G, and 800G.

2, low power consumption, reduce heat

The power consumption of data centers is very large every year. It is estimated that in 2030, the power consumption of data centers will account for 3%-13% of the global total power consumption. Therefore, low power consumption has also become one of the requirements of data center optical modules.

3, high density, save space

As the transmission rate of optical modules increases, the volume and power consumption of four 10 Gbit/s optical modules are higher than that of one 40 Gbit/s optical module.

4. Low cost

With the increasing capacity of switches, major manufacturers have launched 400G switches one after another. Usually, the number of ports on a switch is very dense. If optical modules are installed, the number and cost of optical modules are huge. Therefore, lower-cost optical modules can be used in data centers on a larger scale.

Due to the material cost advantage and high integration characteristics of silicon optical solutions, large-scale commercial will be able to help reduce the cost of high-speed optical modules. In terms of production capacity, silicon optical integration is based on CMOS production process, and it only takes 3 to 5 months to achieve expansion. In terms of output, silicon optical chips are made of 8-inch wafers, with more slices available for single wafers. In terms of yield, silicon wafer materials are inexhaustible, and the comprehensive yield can reach more than 80%-90%. According to a research institute forecast, in 2026, the global Ethernet optical module market size is close to $7 billion, among which 400G/800G high-speed optical module sales will account for 60%.

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